|Year|Title|Album|US R&B|US Pop|US Dance|
|---|---|---|---|---|---|
|1989|"Talk To Myself"/Sweet Memories|Adventures in Paradise A|4|49|18|
|1989|"Promises, Promises"/Lover Come Back|Adventures in Paradise A|7|-|-|
|1990|"One Girl"/Lover Come Back|Adventures in Paradise A|31|-|-|
|1991|"I'm Dreamin'"|New Jack City soundtrack|1|89|16|
|1991|"I Wanna B Ure Lover"|F.S. Effect featuring Christopher Williams|52|-|-|
|1992|"All I See"|Changes|19|-|46|
|1993|"Every Little Thing U Do"|Changes|7|75|-|
|1993|"Come Go with Me"|Changes|74|-|-|
|1995|"Dance 4 Me"|Not a Perfect Man|25|-|-|
|1995|"If You Say"|Not a Perfect Man|91|-|-|

Question: how many christopher williams' songs made it into at least 2 of the 3 charts?
Answer: 3